Halogenized condensation product of the anthracene series and process of making same.



- Germany,

tdifil fhln PATENT @hhlQE.

ALBRECHT SCHMIDT, OE HCHST-ON-THE-MAIN, AND GEORG.

GEN, NEAR HiiCHS'f-ON-THE MAIN, GERMANY, ASSIGNORS T0 EARBWERKE VURM.

MEI-STEIN LUCIUS & BBITNZNG, OE HilCHST-ONJHE-MAIN,

TION GE GERMANY.

KRANZLEIN, or SINDLIN- GERMANY, CORPORA- HALOGENIZED CONDENSATION FBODUCT OF THE ANTHRACENE' SERIES AND PROCESS OF MAKING SAME.

No Drawing. Application filed April To all whom it may concern:

Be it known that we, ALBRECHT Sonar-rm, Ph. D, chemist, and Gnono Knjiivznnm, Ph. D., chemist, citizens of the Empir'eo-f residing at Hochst-on-thc-Mnin, Germany, and Sindlingen, near Hochst-onthe-Main, Germany, have invented certain new and useful Improvements in Halogenized Condensation Products of the Anthracene Series and Processes of Making same, of which the following is a specification.

N e have 'tained by condensation of anthranols' (under which term we comprise anthranol itself and its substitution products) with quinones (under which term we comprise quinone itself and its derivatives and analogues) can be transformed into halogenized products by the action of halogenizmg agents namely halogens or agents capable of eliminating halogen. The new products dye mostly tints of a greener hue thantheir The following examples illustrate our in vention:

Example I; 14:.9 kg. of the blue vat dyestuff, produced from anthranol andquinone, for instance by heating to boiling in nitrobenzene with or without the addition of an oxidizing agent, are mixed with 8 kg. of bromin in 120 kg. of nitrobenzene while stirring. The mixture which. immediately on the addition of the bromin turns brown is gradually heated to boiling while stirring, which causes an elimination of hydrobromlc acid while the solution turns bluish-green. After boiling for ashort time, the resulting melt is cooled, diluted with alcohol, filtered off, washed with alcohol and dried; The dyestuff thus obtained forms a greenishblack powder, insoluble in diluted acids and alkalis, dissolving in concentrated sulfuric acid with a brownish-red color and in alkaline hydrosulfite solution with a violet color, and dyeing cotton from this solution green tints. The amount of bromin foun by analysis showed: Br- 28.2% calculated for the monobromin derivative Br:21.2%. However as the dyestufi was treated only with the quantity of bromin necessary'for the introduction of one atom of it, it must be assumed that. the hydrohromic acid Specification of Letters Patent.

found that the dyestuiis obparent products,

. vat is bluish-green is heated on ramm d Dec.- 10,1912.

10, 1912.- Serial No. 689,859.

formed caused the higher percentage of bromin, which conclusion is in accordance WEE the benzoquinone character of the dyestu In the foregoing example, the quantity of bromin can be increased, whereby products are obtained which are substantially greener. In the place of bromin, there may be used for instance sulfuryl-chlorid or, chlorin or the like, while in the place of the nitrobendissolving agents zene other suspending or diluents) may (comprised under the term be used; furthermore,

-Example II: 15 kg. of the product obtainedby condensing anthrar'iol' with "quinone and which gives blue tints,

in 150 kg. of dry-nitrobenzene with 15 kg. of sulfuryl chlorid, this mixture is st-irre for about one hour without heating and then carefully heated until it boils gently. As

ceases, the mass .is' allowed to cool, where upon it is filtered off, washed with alcohol and dried. In this way the dyestuif is obtained in the form .of blackish a greenish blue. xItS solution in concentrated sulfuric acid is violet-brown, the color of the tints.

Example III If in the foregoing example 1,200 kg. of carbon tetrachlorid are substituted for the nitroben'zene and if the mass the reflux apparatus until the evolution of hydrobro-mic acid ceases, the bromination product isolated as above indicated yields a blue dyestuff which as regards its tinctorial properties, is closely related to the parent pro dyeing cotton fast green duct. Its solution in thebromination can be effected by liquid bromin.

are mixed I soon as the evolution of hydrochloric acid crystals with concentrated sulfuric acid is brownish-red,

the color of the vat violet. The amount of bromin found by analysis showed: Br: 20.42%; calculated for the monobrorn-deriv ative iBr:21.2%.

Having now described our invention, what 1 we claim 1s: 7

1. The process of manufacturing halogenized products of the condensation products from an anthranol and a quinone of the eneral formula: ArO. ..-An, stands for a quinone residue,,andAn for wherein ArO an anthranol residue, which process consists in treating thesaidcondensation products with halogenizing agents.

2. The process of manufacturing halogenized products of the condensation products from an anthranol and a quinone of the general formula: ArO An wherein ArO stands for a qui'none resldue and ,An for 'in treating the said an anthranol residue, which process consists condensation products with bromin.

3.'As new articles of manufacture, the halogenized condensation products from an anthranol and a quinone, being dark green to greenish-black powders, insoluble in diluted acids and alkalis, soluble in concentrated sulfuric acid with a brownish-red to violet-brown color, yielding when treated with an alkaline hydrosulfite solution violet to green vats dyeing cotton greenish'tints.

4 As a new article of manufacture, the brominated condensation product from ant-hranol and quinone, being insoluble in diluted acids and 'alkalis, dissolving in concentrated sulfuric acid to a brownish-red solution and yielding in an alkaline hydrosulte solution a violet vat dyeing cotton green tints-of excellent fastne ss.

In testimony whereof, we aflix oursigna tures in presence of two witnesses.

ALBRECHT SCHMIDT. GEORG KRANZLEIN; Witnesses:

' JEAN GRUND,

CARL GRUND. 

